you see governments that are former autocratic governments that are failed or failing, creating further instability. the instability is at issue there. again, they are concerned about the iranian in the region. the region, which adds to the complexity ty ae. and of course, there's this specific issue at syria and continuing work we've got to do in afghanistan as well. same number of of things added together. also, there is a persistent bad from elements like al qaeda and al qaeda in the arabian peninsula that has the ability to generate a threat to the homeland. so that is very, very important. >> are we going to be able to meet those with the troops that are projected to be there? are we going to accomplish anation? we've had so many families in this country sacrifice. is it going to be worth it to that? i know you do this every day. how do you look at family is and say to time, we are going to pull out, maybe at levels they think might be dangerously low as i am geing information on this. how are you able to do that? when do we reach a hollow force, with the men in women we send in ha